By Default,How Often Does Garbage Collection Run,and How Old Must

Multiple Choice

By default,How often does garbage collection run,and how old must an object be for it to be removed?

A) Every 12 hours,object must be older than 180 days
B) Every 10 hours,object must be older than 180 days
C) Every 12 hours,object must be older than 181 days
D) Every 10 hours,object must be older than 181 days